Home / 231,971.80-347,957.70-121,149.40

Finding the Fourth Proportional to 231,971.80, 347,957.70 and 121,149.40

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Solution

The fourth proportional to 231,971.80, 347,957.70 and 121,149.40 is: 181,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,971.80 : 347,957.70 = 121,149.40 : x
  2. Step 2: Convert to fraction form
    231,971.80/347,957.70 = 121,149.40/x
  3. Step 3: Cross multiply
    231,971.80x = 347,957.70 × 121,149.40
  4. Step 4: Simplify right side
    231,971.80x = 42,154,866,580.38
  5. Step 5: Solve for x
    x = 42,154,866,580.38/231,971.80
  6. Step 6: Final answer
    x = 181,724.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.